ἐν τούτῳ γνώσονται πάντες ὅτι ἐμοὶ μαθηταί ἐστε, ἐὰν ἀγάπην ἔχητε ἐν ἀλλήλοις.

1. ἐν
   in
2. τούτῳ
   this
3. γνώσονται
   they will know
4. πάντες
   all
5. ὅτι
   that
   because
6. ἐμοὶ
   to me
   me
7. μαθηταί
   disciples
8. ἐστε
   you are
   are
9.  
   ,
    
10. ἐὰν
    if
11. ἀγάπην
    love
12. ἔχητε
    you may have
    you have
13. ἐν
    in
14. ἀλλήλοις
    each other
    to one another, to each other
15.  
    .
     

By this all will know that you are my disciples, if you have love for one another.